What are the issues with SQL?
What are the issues with SQL?
The CPU can also be strained if there are bad indexes in place.
- Poorly-Written SQL. Because SQL is declarative, you can write the same query in many ways to receive the same results.
- Bad Indexes.
- Locking Contention.
- Memory Problems.
- High CPU Usage.
What are the pros and cons of SQL?
SQL vs. NoSQL Comparison Chart
| SQL | NoSQL | |
|---|---|---|
| Pros | Cons | Cons |
| Large user community | Data normalization | Smaller user community |
| No code required | Rigidity | Inefficiency with complex queries |
| ACID compliance | Resource-intensive scaling | Data retrieval inconsistency |
What are the common performance issues in SQL Server?
Common SQL Server Performance Issues & Solutions:
- Issue 1: Query Taking Long time than usual processing. This issue may occur due to resource contention from locking.
- Issue 2: Database may face out of space error.
- Issue 3: Client loses connection to the SQL Server.
- Issue 4: Complete system goes to a Deadlock state.
What are the disadvantages of MySQL?
Disadvantages
- MySQL lower version (5.0 or less) doesn’t support ROLE, COMMIT and stored procedure.
- MySQL does not support a very large database size as efficiently.
- MySQL doesn’t handle transactions very efficiently and it is prone to data corruption.
What are the disadvantages of a query?
Mention some disadvantages of query?
- There are no indexes in query.
- Triggers and procedures are SET NOCOUNT ON.
- Sometimes joins that are complicated and complex are excessively complied.
- Cursors and tables that are temporary depicts a bad presentation.
What is SQL state?
SQLSTATE is a code which identifies SQL error conditions. It composed by five characters, which can be numbers or uppercase ASCII letters. An SQLSTATE value consists of a class (first two characters) and a subclass (last three characters).
Why is SQL slow?
Missing indexes, an inadequate storage I/O subsystem, or a slow network are only some of the possible reasons why a SQL Server database engine might slow down, which is why finding the true cause of a performance bottleneck is vital. Poor index design. Poorly designed database schema. Inadequate storage I/O subsystem.
What is deadlock in SQL Server?
A SQL Server deadlock is a special concurrency problem in which two transactions block the progress of each other. The first transaction has a lock on some database object that the other transaction wants to access, and vice versa.